package com.sky.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.IEmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;
import org.springframework.util.StringUtils;

import java.time.LocalDateTime;

@Service
public class EmployeeServiceImpl extends ServiceImpl<EmployeeMapper, Employee> implements IEmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     *
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    @Override
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        // Employee employee = employeeMapper.getByUsername(username);

        LambdaQueryWrapper<Employee> qw = new LambdaQueryWrapper<>();
        qw.eq(Employee::getUsername,username);
        Employee employee = employeeMapper.selectOne(qw);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus().equals(StatusConstant.DISABLE)) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工
     * @param employeeDTO
     */
    @Override
    public void saveEmployee(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);
        //设置默认密码、状态、创建时间、更新时间、创建人、更新人
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        employee.setStatus(StatusConstant.ENABLE);
        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());
        //从ThreadLocal中获取当前登录用户id
        employee.setCreateUser(BaseContext.getCurrentId());
        employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.insert(employee);
    }

    /**
     * 分页查询员工信息
     * @param eDTO
     * @return
     */
    @Override
    public PageResult pageEmployee(EmployeePageQueryDTO eDTO) {
        Page<Employee> page = Page.of(eDTO.getPage(),eDTO.getPageSize());
        LambdaQueryWrapper<Employee> qw = new LambdaQueryWrapper<>();
        qw.like(StringUtils.hasText(eDTO.getName()),Employee::getName,eDTO.getName());
        this.employeeMapper.selectPage(page,qw);

        return PageResult.builder()
                .total(page.getTotal())
                .records(page.getRecords())
                .build();
    }

    /**
     * 启用禁用员工账号
     * @param status
     * @param id
     */
    @Override
    public void startOrStop(Integer status, Long id) {
        Employee employee = Employee.builder()
                .status(status)
                .id(id)
                .build();
        this.employeeMapper.updateById(employee);
    }

    /**
     * 编辑员工信息
     * @param eDTO
     */
    @Override
    public void editEmployee(EmployeeDTO eDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(eDTO,employee);
        //设置更新时间、更新人
        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.updateById(employee);
    }
}